Quote from: steve on August 17, 2026, 03:35:32 PM

Quote from: Nick B on August 17, 2026, 02:01:12 PM

Quote from: steve on August 17, 2026, 09:09:27 AM

Quote from: Nick B on July 15, 2026, 09:05:27 PM

Quote from: steve on July 15, 2026, 03:57:38 PMOne other point that needs mentioning is the use of UL mode.
UL operation can be used in both A, A2, AB1, AB2, and B. I have
never seen UL used in Class C as distortion is extremely high,
thus not necessary.

Output power of UL operation is similar to Pentode/Tetrode mode,
which is very generally around twice the output power of Triode mode.

Frequency response is different from triode mode (which is also different
than both Pentode/Tetrode mode) as the screen of the tube is connected
to a portion of the output transformer primary, so some negative feedback
etc. As a result, the damping factor is increased a little.

Cheers

steve

Hi Steve,

I have only owned a couple of tube amps and I can only recall for sure that my VAC 90 monos allowed the option to switch to UL. That was so long ago and my system was so simple without using any products to control noise, that I don't recall if I preferred one or the other.

Nick

I think most prefer triode mode over UL. UL does fill in the lower midrange/upper bass
vs triode and controls the highs more, appearing as less. If too much lower
midrange/upper bass, one can use a smaller speaker cable.

I use 11 wires in parallel in each leg, so it is simple for me to remove just one
wire to thin the lower midrange just a little for more like triode mode.

The highs are a different story in that fewer parallel speaker wires will mean a
little higher inductive reactance in the highs, thus reducing the highs.
Of course, with a single, large speaker wire, adjustment is prevented.

cheers

steve

Hi Steve,

Quite interesting that you use 11 wires in parallel and that you can fine tune the sound by easily disconnecting one or more of the wires.

Nick

Yes. Anyone with multiple parallel speaker wires can test and find out if more
or fewer wires gives optimal reproduction.

The impedance is minimum near lower midrange/upper bass. A change in dc resistance
will affect this band more than higher frequencies on that particular driver. Kinda
changes the slope of the frequency response.

If one uses a 3 way speaker, two crossovers, there could be another range of
frequencies at the 2nd crossover where an impedance dip occurs, where the sound
will also be affected more than other higher frequencies.

I use a two way, so basically at just the one crossover is where the majority
of sonic change occurs.

Cheers

steve

Quote from: Nick B on August 17, 2026, 02:01:12 PM

Quote from: steve on August 17, 2026, 09:09:27 AM

Quote from: Nick B on July 15, 2026, 09:05:27 PM

Quote from: steve on July 15, 2026, 03:57:38 PMOne other point that needs mentioning is the use of UL mode.
UL operation can be used in both A, A2, AB1, AB2, and B. I have
never seen UL used in Class C as distortion is extremely high,
thus not necessary.

Output power of UL operation is similar to Pentode/Tetrode mode,
which is very generally around twice the output power of Triode mode.

Frequency response is different from triode mode (which is also different
than both Pentode/Tetrode mode) as the screen of the tube is connected
to a portion of the output transformer primary, so some negative feedback
etc. As a result, the damping factor is increased a little.

Cheers

steve

Hi Steve,

I have only owned a couple of tube amps and I can only recall for sure that my VAC 90 monos allowed the option to switch to UL. That was so long ago and my system was so simple without using any products to control noise, that I don't recall if I preferred one or the other.

Nick

I think most prefer triode mode over UL. UL does fill in the lower midrange/upper bass
vs triode and controls the highs more, appearing as less. If too much lower
midrange/upper bass, one can use a smaller speaker cable.

I use 11 wires in parallel in each leg, so it is simple for me to remove just one
wire to thin the lower midrange just a little for more like triode mode.

The highs are a different story in that fewer parallel speaker wires will mean a
little higher inductive reactance in the highs, thus reducing the highs.
Of course, with a single, large speaker wire, adjustment is prevented.

cheers

steve

Hi Steve,

Quite interesting that you use 11 wires in parallel and that you can fine tune the sound by easily disconnecting one or more of the wires.

Nick

Quote from: P.I. on August 17, 2026, 01:25:35 PM

Quote from: steve on August 17, 2026, 10:31:43 AM

Quote from: P.I. on August 17, 2026, 10:14:25 AMWow, Steve!  You've had a helluva year.  Getting older is a challenge.  Good to see that you are on the mend.  Kidney stones on top of colon cancer. Oh, my.

Just get better...

Actually, its Dave 

Thank you Paul. Also had my brother pass away in early may (I am the administrator). Jim's passing has been
the most difficult. Been interesting to say the least.

Cheers
steve

Quote from: P.I. on August 17, 2026, 01:25:35 PM

Quote from: steve on August 17, 2026, 10:31:43 AM

Quote from: P.I. on August 17, 2026, 10:14:25 AMWow, Steve!  You've had a helluva year.  Getting older is a challenge.  Good to see that you are on the mend.  Kidney stones on top of colon cancer. Oh, my.

Just get better...

Actually, its Dave 

Thank you Paul. Also had my brother pass away in early may (I am the administrator). Jim's passing has been
the most difficult. Been interesting to say the least.

Cheers
steve

Quote from: steve on August 17, 2026, 10:31:43 AM

Quote from: P.I. on August 17, 2026, 10:14:25 AMWow, Steve!  You've had a helluva year.  Getting older is a challenge.  Good to see that you are on the mend.  Kidney stones on top of colon cancer. Oh, my.

Just get better...

Thank you Paul. Also had my brother pass away in early may (I am the administrator). Jim's passing has been
the most difficult. Been interesting to say the least.

Cheers
steve

Quote from: steve on August 17, 2026, 09:09:27 AM

Quote from: Nick B on July 15, 2026, 09:05:27 PM

Quote from: steve on July 15, 2026, 03:57:38 PMOne other point that needs mentioning is the use of UL mode.
UL operation can be used in both A, A2, AB1, AB2, and B. I have
never seen UL used in Class C as distortion is extremely high,
thus not necessary.

Output power of UL operation is similar to Pentode/Tetrode mode,
which is very generally around twice the output power of Triode mode.

Frequency response is different from triode mode (which is also different
than both Pentode/Tetrode mode) as the screen of the tube is connected
to a portion of the output transformer primary, so some negative feedback
etc. As a result, the damping factor is increased a little.

Cheers

steve

Hi Steve,

I have only owned a couple of tube amps and I can only recall for sure that my VAC 90 monos allowed the option to switch to UL. That was so long ago and my system was so simple without using any products to control noise, that I don't recall if I preferred one or the other.

Nick

I think most prefer triode mode over UL. UL does fill in the lower midrange/upper bass
vs triode and controls the highs more, appearing as less. If too much lower
midrange/upper bass, one can use a smaller speaker cable.

I use 11 wires in parallel in each leg, so it is simple for me to remove just one
wire to thin the lower midrange just a little for more like triode mode.

The highs are a different story in that fewer parallel speaker wires will mean a
little higher inductive reactance in the highs, thus reducing the highs.
Of course, with a single, large speaker wire, adjustment is prevented.

cheers

steve

Quote from: steve on August 17, 2026, 09:29:20 AM

Quote from: Nick B on August 12, 2026, 10:06:51 PM

Quote from: steve on August 12, 2026, 01:08:06 AMI was up and PBS news had an interesting interview with Anna Lapwood,
organist for Royal Albert Hall in London.


Cheers

steve

Hadn't heard of her, Steve. Here's a link if anyone is interested.

Nick
https://www.classicfm.com/artists/anna-lapwood/organist-conductor-biography-age-instruments/

Sure glad I found her as I love her performances/playing. Nice check for the low/mids.

Cheers
steve

Quote from: steve on August 17, 2026, 09:29:20 AM

Quote from: Nick B on August 12, 2026, 10:06:51 PM

Quote from: steve on August 12, 2026, 01:08:06 AMI was up and PBS news had an interesting interview with Anna Lapwood,
organist for Royal Albert Hall in London.


Cheers

steve

Hadn't heard of her, Steve. Here's a link if anyone is interested.

Nick
https://www.classicfm.com/artists/anna-lapwood/organist-conductor-biography-age-instruments/

Sure glad I found her as I love her performances/playing. Nice check for the low/mids.

Cheers
steve

Quote from: steve on August 17, 2026, 09:29:20 AM

Quote from: Nick B on August 12, 2026, 10:06:51 PM

Quote from: steve on August 12, 2026, 01:08:06 AMI was up and PBS news had an interesting interview with Anna Lapwood,
organist for Royal Albert Hall in London.


Cheers

steve

Hadn't heard of her, Steve. Here's a link if anyone is interested.

Nick
https://www.classicfm.com/artists/anna-lapwood/organist-conductor-biography-age-instruments/

Sure glad I found her as I love her performances/playing. Nice check for the low/mids.

Cheers
steve

Quote from: Nick B on April 25, 2024, 08:32:22 PM

Quote from: steve on April 25, 2024, 05:03:08 PM

Quote from: Nick B on April 21, 2024, 08:18:16 AMWas it The Fastest Guitar Alive  in 1967? Just did a search asking if he was ever in movies, and then specifically a western.

People also ask
Did Roy Orbison ever appear in a western?
About
4.3/10
IMDb
7%
Rotten Tomatoes
66% liked this movie
Google users
Director: Mickey Moore
Art directors: George Davis, Merrill Pye
Cinematography: W. Wallace Kelley
Distributed by: Metro-Goldwyn-Mayer
Editor: Ben Lewis

https://youtu.be/J9HW4KozIk0?si=NIz98ZPIx4gA3XR1

https://youtu.be/cK9JwuqZXWM?si=iuJZGfpIz9moU_n7

Nice work Nick! Roy sure had a voice.

steve

Sure, Steve. Glad I was able to track it down. Yes, I sure enjoyed listening to him 🎵

Quote from: steve on August 17, 2026, 09:25:58 AM

Quote from: Nick B on August 13, 2026, 10:26:58 AM

Quote from: steve on August 13, 2026, 07:42:23 AMI found out that when opening for the Beatles for the first time.

"Roy Orbison opened for The Beatles on their first UK tour in May 1963 and reportedly played through 14 encores before the Beatles even took the stage Far Out Magazine+2.

On the opening night in Slough, Buckinghamshire, Orbison performed a set that included hits like Only the Lonely, Candy Man, What'd I Say, Running Scared, and Dream Baby, closing with his new song In Dreams. The audience was so captivated that they kept calling him back for multiple encores. He was about to attempt a 15th when John Lennon and Paul McCartney physically held him back so they could finally perform American Songwriter.

This moment became one of the most talked‑about incidents of the tour, with fans chanting "We Want Roy!" and the Beatles having to intervene to stop him from returning to the stage Reddit. "

Another comment attributed to Elvis; that Elvis respected Roy so highly,
that he would never wish Roy to open before him.

Cheers
steve

Hi Steve,

I enjoy his music. Wasn't aware he died at age 52 because of a heart attack. Interesting story about the sunglasses. On a trip to the UK, he left his glasses on the plane. So he used his prescription sunglasses when he performed and kept doing it thereafter.

Hope all is well back east. Any projects going on?

Nick

Nice info Nick.

Just tinkering with inexpensive room treatments, pillows, and crossovr board.
Moving a wire/soldering connection on the board 1/8" makes a sonic difference.
The Mimir is blowing me away, so just tinkering with the speakers.

Last tues, had another 2+ hour outpatient procedure to remove the rest of my
3 cm kidney stone. Stent coming out soon. Otherwise all is going better with
once a week physical therapy. Thanks for asking.

cheers
steve

Quote from: steve on August 17, 2026, 10:31:43 AM

Quote from: P.I. on August 17, 2026, 10:14:25 AMWow, Steve!  You've had a helluva year.  Getting older is a challenge.  Good to see that you are on the mend.  Kidney stones on top of colon cancer. Oh, my.

Just get better...

Actually, its Dave 

Thank you Paul. Also had my brother pass away in early may (I am the administrator). Jim's passing has been
the most difficult. Been interesting to say the least.

Cheers
steve

Quote from: P.I. on August 17, 2026, 10:14:25 AMWow, Steve!  You've had a helluva year.  Getting older is a challenge.  Good to see that you are on the mend.  Kidney stones on top of colon cancer. Oh, my.

Just get better...